Displaying 6 results from an estimated 6 matches for "times2".
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times
2007 Jan 19
4
Newbie question: Statistical functions (e.g., mean, sd) in a "transform" statement?
...05 95.93050
2 17.231940 27.48530 82.962916 10.20619
3 20.279220 10.33575 66.209290 30.71846
4 NA 53.31993 12.398237 35.65782
5 9.295965 NA 48.929201 NA
6 63.966518 42.16304 1.777342 NA
one can use "transform" to total all or some columns, thus,
times2 <- transform(times,totaltime=time1+time2+time3+time4)
> times2
time1 time2 time3 time4 totaltime
1 70.408543 48.92378 7.399605 95.93050 222.6624
2 17.231940 27.48530 82.962916 10.20619 137.8863
3 20.279220 10.33575 66.209290 30.71846 127.5427
4 NA 53.3...
2005 Jan 26
2
reshape (a better way)
...g and then I merge the data together. This is
taking a long time. my question is:
How do I specify that there are multiple variables that are varying in
reshape. Is there a way to do this?
The idea is to have something like varying1, varying2,etc,... and each are
assosiated with their own times1, times2.
something like
reshape(mydata, direction="long", varying1=varying1,varying2=varying2,
varying3=varying3, split=list(regexp="[a-z][0-9]", include=TRUE),
idvar="ID", times1=times1, times2=times2, times3=times3)
Jean
2006 Mar 07
1
How to change time zones?
Say you have a POSIX object that is in UTC. How do you change the
values to another timezone?
If I do this:
times <- strptime(times, "%H:%M:%S")
times1 <- as.POSIXct(times, tz="UTC")
times2 <- as.POSIXct(times, tz="CDT6CST")
times1 id UTC, but times2 is still UTC, not CTD. Why? Is the only
was to change time zones to add seconds to POSIX objects?
[[alternative HTML version deleted]]
2006 Aug 26
1
problems with loop
...p[k,2]=0}
}
}
return(tmp)
}
# The model to be fitted
Model_1=function(beta0_mod,mu_mod,k_mod,I_mod)
{
parms = c(beta0=beta0_mod, mu=mu_mod, k=k_mod)
my.atol = 1e-6
times1=c(0,0.002884615,0.003846154,0.005769231,0.009615385,0.01,0.019230769)
times2=c(0.028846154,0.038461538,0.057692308,
0.076923077,0.083333333,0.096153846)
times3=c(0.115384615,0.125,0.134615385,0.166666667,0.25,0.416666667,0.5)
times4=c(0.58333333,0.666666667,0.75,0.83333333,0.916666667,1)
times5=c( 1.166666667,1.25,1.5,1.6,1.75,2,2.5)
times6=seq(3,20...
2007 Oct 08
2
sort time
Hello, I have got the following problem:
> times <- c("02.07.2007", "03.07.2007","03.09.2007", "04.07.2007","05.07.2007")
> mode(times)
[1] "numeric"
> tim <- as.character(times)
> mode(tim)
[1] "character"
> sort(times)
[1] "02.07.2007" "03.07.2007" "03.09.2007"
2006 Mar 08
0
survival
...ID: <5CB24417-5F1B-49AC-AACF-4FD5479BC7D6 at bu.edu>
Content-Type: text/plain
Say you have a POSIX object that is in UTC. How do you change the
values to another timezone?
If I do this:
times <- strptime(times, "%H:%M:%S")
times1 <- as.POSIXct(times, tz="UTC")
times2 <- as.POSIXct(times, tz="CDT6CST")
times1 id UTC, but times2 is still UTC, not CTD. Why? Is the only
was to change time zones to add seconds to POSIX objects?
[[alternative HTML version deleted]]
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Message: 23
Date: Tue, 7 Mar 2006 11:30:20 -050...